|
|
A267402
|
|
Number of nX(n+2) arrays of permutations of n+2 copies of 0..n-1 with every element equal to or 1 greater than any north, west or northwest neighbors modulo n and the upper left element equal to 0.
|
|
0
|
|
|
1, 35, 18, 38, 71, 132, 222, 368, 568, 866, 1254, 1799, 2483
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4
..0..1..2..2..3..3....0..1..2..2..2..3....0..1..2..3..3..3....0..1..2..2..3..0
..0..1..2..3..3..0....0..1..2..3..3..3....1..1..2..3..0..0....1..1..2..3..3..0
..1..1..2..3..0..0....1..1..2..3..0..0....1..2..2..3..0..0....1..2..2..3..0..0
..1..2..2..3..0..1....1..1..2..3..0..0....1..2..2..3..0..1....1..2..3..3..0..1
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|